Bone Up

Bone Up : Phrases

Meaning:

To read about a subject, usually for exam purposes.

Example:

Not having attended any classes, Shawn thought that all he had to do was to bone up on his text book to ace the final exam.

Origin:

The phrase is used mainly by students and goes back to one of the prime sources of pre examination last minute study - texts of literal versions of classic books produced by the firm of Bohn. Students had simply to Bohn up.